#include <stdio.h>

int main() {
    char str[] = "Computer Science";
    char *ptr = str;
    
    printf("原始字符串: %s\n", str);
    printf("间隔输出: ");
    
    while (*ptr != '\0') {
        printf("%c", *ptr);
        ptr += 2;
    }
    printf("\n");
    return 0;
}
